Abstract: A pen needle includes a hub supporting a needle and a distal needle shield that can retract to expose the needle and return to an extended position to cover the needle. A proximal needle shield moves to an extended position to cover a proximal end of the needle. A spring extends between the distal and proximal needle shields to bias the distal and proximal needle shields to their respective extended positions. A locking member on the distal needle shield cooperates with the hub to lock the proximal and distal needle shields in their respective extended positions. An indicator in the hub couples to the distal needle shield when the distal needle shield is moved to a retracted position. The indicator moves with the distal needle shield to the extended position of the distal needle shield where the indicator indicates that the pen needle is no longer usable.

Abstract: A pen needle (10) includes a hub (34) supporting a needle (28) and a distal needle shield (14) that can retract to expose the needle during injection and return to the extended position after use and locked in the extended position cover the needle. A proximal needle shield (16) moves to an extended position with respect to the hub (34) to cover a proximal end (34) of the needle. A spring (64) extends between the distal needle shield (14) and the proximal needle shield (16) to bias each needle shield to the respective extended position. A locking member (78) on the distal needle shield cooperates with the hub to lock the needle shields in the extended position. An indicator (94) in the hub engages and couples to the distal needle shield (14) when moved to the retracted position. The indicator (94) moves with the distal needle shield (14) to the extended position where the indicator is visible through the distal needle shield (14) indicating that the pen needle is no longer usable.

Abstract: A package (116) for a medical cannula, including a plurality of medical cannula outer shields (29), the outer shields each being configured for receiving a medical cannula therein. The package also includes a web (100) having a plurality of holes (104) therethrough corresponding to the plurality of outer shields. Each of the corresponding plurality of holes retains one of the plurality of medical cannula outer shields therein.